| 改进的三维多重网格法及其工程应用 |
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| 引用本文： | 包劲青,杨强,官福海.改进的三维多重网格法及其工程应用[J].水力发电学报,2011,30(2):112-117. |
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| 作者姓名： | 包劲青 杨强 官福海 |
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| 作者单位： | 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084 |
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| 基金项目： | 国家自然科学基金(90715041) |
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| 摘 要： | 本文针对多重网格强度校核方法中的不足之处--滑面子结点应力的有限元网格依赖性,提出了相应的改进方法.改进方法把滑面网格结点作为虚拟的高斯点,其应力的计算方法与有限元中高斯点应力的计算方法相同.改进的方法在继承原方法特点的同时,比原来的方法具有更好的理论基础.数值算例分析表明改进方法中子网格结点应力的取值更为准确可靠,降...
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| 关 键 词： | 水工结构 坝肩稳定 多重网格法 高拱坝 虚拟高斯点 |
An improved 3-D multi-grid method and its engineering application |
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| Bao Jinqing
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Yang Qiang
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Guan Fuhai.An improved 3-D multi-grid method and its engineering application[J].Journal of Hydroelectric Engineering,2011,30(2):112-117. |
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| Authors: | Bao Jinqing Yang Qiang Guan Fuhai |
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| Affiliation: | Bao Jinqing,Yang Qiang,Guan Fuhai(State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084) |
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| Abstract: | An improvement method is proposed to overcome the disadvantage of the existing 3-D multi-grid method(3DMM)i,.e.dependence of the stresses at sliding grid points on finite element discretization.In this improved 3DMM,the sliding grid points are viewed as virtual gauss points for which the same method of stress computation as the real ones is used.The new method that inherits all the advantages of 3DMM is on a better theoretical ground.An example shows more accurate and reliable stresses at the sliding grid p... |
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| Keywords: | hydraulic structure abutment stability multi-grid method high arch dam virtual gauss point |
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